VD (E2.1) 07/2017 page 20/96
Inert gases in high concentrations are hazardous to health. They are colorless and almost odorless and
therefore practically imperceptible. Inhalation of inert gases can cause drowsiness up to respiratory
arrest. When the O
2
content of the air decreases below 18%, there is risk of death from lack of oxygen.
Any gas that might escape has to be led out via good room ventilation or a suitable exhaust system.
WARNING
High concentration of inert gas.
Risk of death by suffocation.
∅ Do NOT set up chambers in non-ventilated recesses.
Ensure technical ventilation measures.
Respect the relevant regulations for handling these gases.
When decommissioning the vacuum drying oven, shut off the inert gas supply: Close
valves (4) or (6).
4.4 Electrical connection
The chambers are supplied ready for connection. They come with a fixed power connection cable of at
least 1800 mm / 70.87 in in length.
Model Power plug
Nominal voltage
10% at the
indicated power frequency
Current
type
Chamber
fuse
VD 53
Shockproof plug
230 V at 50 Hz
230 V at 60 Hz
1N~ 10 A
NEMA 5-15P 115 V at 60 Hz 1N~ 12,5 A
VD 115-UL NEMA 5-20P 115 V at 60 Hz 1N~ 20 A
• The domestic socket must also provide a protective conductor. Make sure that the connection of the
protective conductor of the domestic installations to the chamber’s protective conductor meets the
latest technology. The protective conductors of the socket and plug must be compatible!
• Prior to connection and start-up, check the power supply voltage. Compare the values to the specified
data located on the chamber’s type plate (chamber front behind the door, bottom left-hand, see chap.
1.4).
• When connecting, please observe the regulations specified by the local electricity supply company
and as well as the VDE directives (for Germany). We recommend the use of a residual current circuit
breaker.
• Pollution degree (acc. to IEC 61010-1): 2
• Over-voltage category (acc. to IEC 61010-1): II
Danger of incorrect power supply voltage.
Damage to the equipment.
Check the power supply voltage before connection and start-up.
Compare the power supply voltage with the data indicated on the type plate.
See also electrical data (chap. 20.2).
To completely separate the chamber from the power supply, you must disconnect the power
plug. Install the chamber in a way that the power plug is easily accessible and can be easily
pulled in case of danger.